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Definition of: RADS
- The unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)
- A unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
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- (n.) A plant of the genus Ziziphus (Z. lotus); -- so called by the Arabs of Barbary, who use its berries for food. See Lotus (b).
- (n.) A variety of carnelian, of a rich reddish yellow or brownish red color. See the Note under Chalcedony.